//
// Created by djy on 2019/7/24.
//

#include "../inc/comfun.h"

u8 checksum(const void *data, u16 len)
{
    u8 cs = 0;

    while (len-- > 0)
        cs += *((u8 *) data + len);
    return cs;
}


void os_memcpy(void *dst, const void *src, u16 len)
{
    while (len--)
    {
        *((u8 *) dst + len) = *((const u8 *)src + len);
    }
}

u8 os_memcmp(const void *s1, const void *s2, u16 n)
{
    while (n--)
    {
        if (*((u8 *) s1 + n) != *((u8 *) s2 + n))
            return 1;
    }
    return 0;
}

void os_memset(void *s1, u8 val, u16 len)
{
    while (len--)
    {
        *((u8 *) s1 + len) = val;
    }
}

u8 is_all_xx(const void *s1, u8 val, u16 n)
{
    while (n && *(u8 *) s1 == val)
    {
        s1 = (u8 *) s1 + 1;
        n--;
    }
    return !n;
}

int is_data_all_xx(const unsigned char data[], int len, unsigned char x)
{
    int i;
    for ( i = 0x00 ; i < len ; i++)
    {
        if (x != data[i]) break;
    }
    if ( i >= len) return(0x01);
    return(0x00);
}

/*
u8 is_all_bcd(const void *s1, u8 len)
{
    while (len--)
    {
        if (get_bits(*(u8*)s1, 0, 3) > 9) return 0;
        if (get_bits(*(u8*)s1, 4, 7) > 9) return 0;
    }
    return 1;
}
*/

u32 get_le_val(const u8 * p, u8 bytes)
{
    u32 ret = 0;

    while (bytes-- > 0)
    {
        ret <<= 8;
        ret |= *(p + bytes);
    }
    return ret;
}

void put_le_val(uint32_t val, uint8_t *p, u8 bytes)
{
    while (bytes-- > 0)
    {
        *p++ = val & 0xFF;
        val >>= 8;
    }
}

void * os_memmove(void *dest, const void *src, u16 n)
{
    s8 *ret = (s8 *) dest;

    if (ret <= (s8 *) src || ret >= (s8 *) src + n)
    {
        while (n--)
        {
            *ret++ = *(s8 *) src;
            src = (s8 *) src + 1;
        }
    }
    else
    {
        ret += n - 1;
        src = (s8 *) src + n - 1;
        while (n--)
        {
            *ret-- = *(s8 *) src;
            src = (s8 *) src - 1;
        }
    }
    return dest;
}

//С????
unsigned int get_int_para(unsigned char buff[],int i)
{
    return (buff[i*4] + (buff[i*4+1]<<8) + (buff[i*4+2]<<16) + (buff[i*4+3]<<24));
}

unsigned short get_short_para(unsigned char buf[],int i)
{
    return (buf[i*2] + (buf[i*2+1] << 8));
}

//---------------------------------------------------------------------------------------

//==========================MODBUS CRC16D???????????????????===============================


static const unsigned char  CRCHi[] = {
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
        0x00, 0xC1, 0x81, 0x40
};

static const unsigned char  CRCLo[] = {
        0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
        0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
        0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
        0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
        0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
        0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
        0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
        0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
        0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
        0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
        0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
        0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
        0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
        0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
        0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
        0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
        0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
        0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
        0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
        0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
        0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
        0x41, 0x81, 0x80, 0x40
};

unsigned short add_crc16(unsigned char *buffer, unsigned char data_length)
{
    unsigned char crc_hi = 0xFF; /* high CRC byte initialized */
    unsigned char crc_lo = 0xFF; /* low CRC byte initialized */
    unsigned int i; /* will index into CRC lookup */
    unsigned char len = data_length;
    unsigned char *buf = buffer;

    /* pass through message buffer */
    while (len--) {
        i = crc_hi ^ *buf++; /* calculate the CRC  */
        crc_hi = crc_lo ^ CRCHi[i];
        crc_lo = CRCLo[i];
    }

    *(buffer + data_length) = crc_hi;
    *(buffer + data_length + 1) = crc_lo;

    return data_length + 2;
}

//hex转字符串  字母大写 例 0x1A -> "1A"
static void hex2str(char str[],unsigned char var)
{
    const char *hex_table = "0123456789ABCDEF";

    str[0] = hex_table[var>>4];
    str[1] = hex_table[var&0x0f];
}

//hex数组转字符串 返回字符串长度； 例 {0xAA,0XBB,0XCC} -> "AABBCC"
//字符串缓存区长度不够 或需转换数据长度为0  返回-1
int  hexarry2str(char str[],int str_size,unsigned char var[],int var_size)
{
    int i = 0;

    if((str_size) < (var_size*2)+1)//str空间不够
    {
        return -1;
    }

    if(var_size<=0)
    {
        return -1;
    }

    for(i=0;i<var_size;i++)
    {
        hex2str(str+i*2,var[i]);
    }

    *(str+var_size*2) = '\0';
    return  var_size*2+1;
}

char *i2str(uint8_t val, char *dest)
{
    const char *charmap = "0123456789ABCDEF";

    *dest++ = charmap[get_bits(val, 4, 7)];
    *dest++ = charmap[get_bits(val, 0, 3)];
    *dest++ = '\0';
    return dest - 3;
}

const char *_arr2str(const void *arr, int len, void *dest, int maxlen, int del)
{
    const uint8_t *_arr = (const uint8_t *)arr;
    char *_dest = (char *)dest;

    while (len-- && maxlen > 0)
    {
        i2str(*_arr++, _dest);
        _dest += 2;
        *_dest++ = del;
        maxlen -= 3;
    }
    if (_dest - (char *)dest > 0) *--_dest = '\0';

    return (const char *)dest;
}

const char *arr2str(const void *arr, int len, void *dest, int maxlen)
{
    return _arr2str(arr, len, dest, maxlen, ' ');
}